How to replace part of a line in a file with bash or shell?

Question

linux

All the best, how can this be implemented correctly?

Answer 1

man sed, awk, perl without knowing the details it's hard to advise more.

Answer 2

sed -i 's/http/https/g' file1
replaces http with https in file1
without -i changes are displayed but the original file is not changed.
well, in more detail how vaut man / google wrote correctly on sed / awk utilities

Answer 3

there is also a tr command "what" "on what"